Comparison Of Contact And Non-Contact Radar

With the continuous advancement of industrial automation, the application of radar level gauges is becoming increasingly prevalent across various industries. A thorough analysis and comparison of contact guided-wave radar level gauges and non-contact antenna-based radar level gauges provide valuable reference for companies when choosing suitable products.

Contact guided-wave radar level gauges directly contact the measured medium through fixed guided-wave cables, utilizing the propagation characteristics of guided waves to measure the level. This technology is suitable for high-temperature, high-pressure environments and situations with low dielectric constants. However, it may face issues such as cable wear, material buildup, or mechanical failures, which can affect its long-term stability and reliability.

In contrast, non-contact antenna-based radar level gauges use high-frequency electromagnetic waves for measurement, offering the advantage of non-contact measurement. This makes them more reliable in the presence of adhesive substances or corrosive liquids and reduces the need for frequent maintenance. Additionally, non-contact radar gauges are more flexible in installation, adapting well to complex tank structures.

However, the wider beam of non-contact antenna-based radar level gauges may lead to interference during measurement from sidewall reflections, potentially affecting measurement accuracy. In comparison, contact guided-wave radar level gauges effectively avoid these interferences when dealing with confined spaces or complex structures.

In terms of application scenarios, guided-wave radar is particularly suited for measuring solid materials with low dielectric constants and liquid-liquid interfaces, while non-contact radar excels in liquid level measurement and powder detection. When selecting a radar level gauge, companies should consider the specific process requirements, medium characteristics, and environmental conditions, weighing the advantages and disadvantages of both technologies.

Both contact guided-wave radar level gauges and non-contact antenna-based radar level gauges have their unique features, enabling companies to make informed choices based on actual needs to achieve optimal measurement performance and economic benefits. With technological advancements, the integration and innovation of these two measuring methods will further promote the development of industrial automation in the future.